My guess would be, that not all rotters spawn with 100 tactics, there is actually a range, so many would be under 100. In my experience you need to be within 25 points of the opponents tactics to gain. So, any rotters that spawned with less than 93.2, you would have no chance to gain from them. Leaving the ones that spawn with more than that to *potentially* gain from.
Or, it could just be you need to turn something down.
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